Manufacture of carbureted water-gas.



O. B. EVANS. MANUFAGTURE 0F CARBURBTBD WATER GAS. APPLICATION FILED fmmo, 1912.

Patented Jan. 19, 1915.

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ownN BRooKE EVANS, or rHILADELPHLA,

PENNSYLVANIA," ASSIGNOR TO THE UNITED GAS IM1EBOVElVlI-IEIN'L COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORFORA- '.LIIOINT EV PENNSYLVANIA.

" l\.rrnn STA MANUFACTURE OF CARBURETED WATER-GAS.

`1,25,676 Specification of Letters Patent. Pantnted Ja,m 19 11915.

Application led February 20, 19158. Serial No. 678,756.

other objects of the To all whom it may concern a citizen of the United States, and a. resident of Philadelphia, in the county of Phi-ladelphia and State oi' Pennsylvania, have invented certain new and useful Improvements in the Manufacture of Carbureted Vater-Gas, of which Ithe following is a specification.

The principal object of the present invention is to effect a saving of fuel and invention are to obtain increased candle power in the gas from a given amount of oil; to localize the heating eiiect of the secondary combustion of fuel or producer gas in preparation for the `subsequent carburization of the water gas; to discharge the blast gases from the apparatus at relatively low temperature while maintaining sufficient heat in the apparatus for properly7 heating the oil; to effect the most advantageous distribution of heat in the apparatus; and to vary the rapidity of flow of the oil gas through the xing chambers, if desired.

Another object of the invention is to deliver the blast gas for secondary combustion with air to a comparatively hot surface rather than to a surface made comparatively cool by the previous vaporization of oil upon it or in its vicinity The invention will be claimed at the end hereof, but. will be irst described in connection with the embodiment chosen from other embodiments for the sake of illustration in the accompanying drawings,

in which- 'Figure l, is a top or plan View of apparatus embodying features of the invention, and Fig. l2, is a sectional view, partly in elevation, taken on the line 2--2 of Fig. 1.

In the drawings 41, is a generator having steam and air connections 2 and 3, and

otherwise adapted for the production of blast `and blue water gas alternately.

4, is an orf-take from the generator that maybe made to communicate with the chamber 5 orv the chamber 6, according to the position of the valves 7 and 8 in the branches 9 and 10. The chambers 5 and 6 are dulicates of each other and intercommunicate y means of the connection 11 arranged at the base thereof. Each of these chambers 5 and 6, contains checkerbrick or the like 15."l

with Space above and below it and each of these chambers is provided with valved means 13 for introducing ofil and 'with means 14 for introducing air and with an off-take 15. lIt may be'said that when one of the chambers 5 or 6 is operating, during a blow and run, as a carbureter the other chamber is operating as a fixing chamber and that during the next blow and run the chamber which was operating as a fixing chamber becomes a carbureter and the chamber which was operating as a carbureter becomes a fixing chamber, with the result that the combustion of blast gas takes place in the vicinity of checkerbrick left comparatively hot, Jfor example, about 13.00 F., instead of in the vicinity of checkerbrick le-fft comparatively cool by the vaporization in` its vicinity of oil. The offtakes are provided with stack valves 16 and with branches 17 that lead to wash boxes 18. The wash boxes are connected with a gas off-take 19 having valved branches 20 and 21 that lead to the respective wash boxes.

It is unnecessary to describe that blast gas and blue water gas are alternately made during the blow and run in the generator 1, because that is well understood and in the following description it will be assumed' that the generator is operating in that way.

to the chamber 5, the valve 7 being open and the valve Si` being closed. The blast gas is -burned in the chamber 5 by the addition of air, heating the top of the checkerbrick comparatively hot, for example, to- 2300o F., the hot products pass down through the chamber 5, through the connection 11 up through the chamber 6 and escape by the stack valve 16 of that chamber, which is open. At irst these blast ases escape at relatively low temperature, or example, at about 10000 F., but as the blow continues their temperature rises to about 1300OgF., which is the usual temperature. The average, however, is lower than usual. These gases raise the temperature lof the checkerbrick in the chamber 6 so that it is approximately 13000 F. The stack valve 16 of the chamber 5 is closed. lBlue water gas then follows the same course, with the exception that both stack valves are closed the valve in the branch 20 closed. Oil or the like is introduced at 13 and in evaporating reduces the temperature of the check-4 5 to, for example,

6 closed and the stacklvalve of the cham.

ber 5 open. The blast gas in the chamber 6 meets checkerbrick at relatively high temterature, about 13000 F., as has been said and for this reason on the application of the secondary air through connection 14 of the chamber l6, the blast gas even though lean, thatis low in CO, which is the case particularly at the inmediately burns thus localizing the combustion and not Stringing it along down through the checkerbrickof` the chamber 6.

The temperature of the .checkerbrick, as has been said, is about 13000 F., so that the work of combustion of the blast gas 'is to raise it about 10000 F. to 23000 F. The products of combustion pass through the chamber 6, the connection lland chamber 5, meeting progressively cooler checkerbrick, and escapefrom its stack 16, at as has been said about 10000 F. (the temperature to which the top of the checkerbrick in the chamber 5 was reduced by vaporization of oil) and then at increasing temperature to 13000 F., the average, however, being less than 13000 F. as is-usu'al. At the next run the blue water gas is carbureted in the chamber 0 cooling the top of its checkerbrick to about 10000 F. and the carbureted Water gas passes by way of the connection 11, through -the chamber 5, the branch 20 to the olf-take 19, the valve in the branch 21 being closed and this carbureted water gasfleaves the chamber 5 at a temperature of about 13000 F. At the next blow the blast gas is burned inthe chamber 5 in the vicinity of checkerbrick at 13000 F.

It will be noted that the vaporization of oil cools the checkerbrick in its vicinity in one chamber to about 10000 F., which is usual, but at the next blow the blastgas is not introduced into that chamber for combustion with air, but is .introduced into the other chamber and burned in the vicinity of checkerbrick the temperature of which is com )aratively high, for example 13000 F., so t at the combustion of the 'blast gas, even though lean, is localized and is not strung out through the apparatus which is At the next blow, the blast beginning of the blow,

thus properly prepared for the vaporization of oil. Products of combustion on their way to the stack traverse progressively cooler checkerbrick to which they impart their heat, escaping from the stack at first at relatively low temperature and afterward at high temperature, perature, however, being comparatively low. The air connections 14 are shown as applied to the pipes 9 and 10, but if preferred one air connection 14a applied to the outlet l can be used. By manipulating the valves 7 and 8 so that they `are both opened during the run it ispossible to pass only apart of the blue water gas through'the chamber in which carburization is taking place and the rest of 'the'blue Water gas into the other chamber where it is met by the carbureted water'gas and led off from the apparatus. In this way the rapidity of flow of the o1l gas through the chambers can be varied.

While, in thel foregoing description, reference is made. to temperatures it is not the intention to' limit the inventlon to speclic temperature but the ,latter are mentioned the average temv only `for the sake of description so that those skilled in the art will readily understand the improved results accomplished. Vithout reference to temperatures it may be said that part of the apparatus which lis comparatively hot and from which the gas has been previously led ing burned at a part of the apparatus which is comparativelycool by reason of the previous vaporization of oil, and further that the products of combustion of the blast gas are led to the stack through progressively cooler apparatus instead of.- through pro-- gressively hotter apparatus.

What 1 claim is:

The method of making carbureted water gas which consists in alternately making blows of blast gas and runs of blue water gas, passing the blows and' runs in succes# sion and in reverse direction through a chamber carbureting the successive lruns alternately at separated points in the chamber whereby they are cooled, burning successive blows alternately at points of relatively high temperature opposite to those at which the preceding carbureting was done, and leading off the carbureted gas and products-of combustion alternately at opposite ends of the chamber. p

In testimony whereof Il have hereunto signed my name.

OWEN BROOKEEVANS.

In the presence of CLIFFORD K. CAssEL, FRANK E. FRENCH.

oill as distinguished from be-v 

